Currency Converter

Real‑time (daily) exchange rates for 30+ currencies. Convert any amount, see the inverse rate, and explore the macroeconomic forces behind foreign exchange. Ideal for travellers, e‑commerce sellers, students of finance, and curious minds.

Fetching real-time rates...
Your privacy: Conversion is done locally. Live rates fetched from BIS(no personal data sent). You can also use built‑in reference rates offline.
Conversion Result
United States Dollar
→
Euro

Today's Conversion History

Popular Exchange Rates

Currency Pair Exchange Rate Source

How exchange rates work

An exchange rate is the price of one currency expressed in terms of another. It is determined by the interplay of supply and demand in the global forex market – the world’s largest financial market, with a daily turnover exceeding $7.5 trillion. This tool uses the mid‑market rate (the average of bid and ask), which is the fairest benchmark.

Amounttarget = Amountbase × (Ratetarget/base)

or using a common base (USD):
Amountto = (Amountfrom / ratefrom) × rateto

From gold standard to floating fiat

Historically, currencies were pegged to gold (the classical gold standard). After the Bretton Woods agreement (1944), major economies adopted a US dollar peg convertible to gold. When Nixon ended convertibility in 1971, the world moved to floating exchange rates, where market forces reign. Today, some currencies float freely (USD, EUR, JPY), while others are managed (CNY) or pegged (AED, SAR). The orthocenter of this financial triangle? The concept of purchasing power parity (PPP) – the idea that exchange rates should equalise the price of a basket of goods across countries.

Why use a professional currency converter?

  • Travel & E‑commerce: Quickly know what you’re really spending abroad, avoiding the mental math.
  • Financial analysis: Convert financial statements, compare stock prices across exchanges, or compute cross rates.
  • Academic & research: Understand real exchange rates, carry trade, and interest rate parity.
  • Business: Invoice international clients, hedge currency risk using forward rates (not provided here, but rates are a start).

The math behind the conversion

Given a base currency (often USD as the world’s reserve), we store exchange rates ri = how many units of currency i per USD. To convert from currency A to B:

AmountB = AmountA × (rB / rA)

The inverse rate is simply rA / rB. This cross‑currency calculation eliminates triangular arbitrage if the market is efficient. Our tool updates rates daily from a public API (or uses embedded ECB rates as fallback).

How to use this converter

  1. Enter the amount, choose the source currency (“From”) and target currency (“To”).
  2. Click Convert – the result appears instantly.
  3. Use the swap button (↔) to reverse the pair.
  4. Quick‑example buttons fill typical amounts for common routes.
  5. Check the reference table below for all current rates vs USD.
Case Study: A European online shop selling to the US

A German retailer lists a product for €89. A US customer wants to pay in USD. Using the mid‑market rate (EUR/USD = 1.0959), the amount is 89 × 1.0959 = $97.54. However, the customer’s credit card may apply a 1‑3% spread plus a foreign transaction fee. The shop can use this calculator to set a baseline and then add a buffer to cover fees. Understanding the bid‑ask spread is crucial: the rate offered to sell USD (bid) is slightly lower than the mid, while the buy rate is higher. This tool helps estimate fair value before bank charges.

Key theories behind exchange rates

  • Purchasing Power Parity (PPP): In the long run, exchange rates should adjust so identical goods cost the same in different countries. The famous Economist “Big Mac Index” is a light‑hearted PPP test.
  • Interest Rate Parity (IRP): The difference in interest rates between two countries equals the expected change in exchange rates (covered IRP ensures no arbitrage in forward markets).
  • Balance of Payments: Current account deficits/surpluses influence currency demand. A country with a large deficit (importing more than exporting) tends to see currency depreciation.

Common misconceptions about currency conversion

  • “Exchange rates are set by banks” – In free markets, rates are determined by global supply/demand. Banks add a markup, but the underlying rate is the mid‑market.
  • “You can get the Google rate at an airport kiosk” – Airport exchangers offer poor spreads (often 8‑12%). Always compare.
  • “Stronger currency = better economy” – A strong currency can hurt exports. It's a double‑edged sword.
  • “All currencies are free‑floating” – Many are pegged (e.g., Saudi Riyal to USD). Our tool includes pegged ones at their official rates.

Applications in finance & everyday life

  • Travel budgeting: Pre‑trip planning, expense tracking.
  • International money transfers: Compare Wise, Revolut, or bank rates.
  • Cryptocurrency pairs: Many crypto exchanges show BTC/USD, ETH/EUR – same principles.
  • Academic projects: Analysing real effective exchange rates (REER).

About this Tool – This tool was prepared by the GetZenQuery Tech team based on authoritative sources: the European Central Bank (ECB) reference rates, the Bank for International Settlements (BIS) statistics, and International Monetary Fund (IMF) working papers. All data sources are credited and the content is reviewed internally for accuracy and timeliness. Last updated: March 2026.

Frequently Asked Questions

The “live” rates are fetched once per day from exchangerate.host (which sources data from the European Central Bank and other central banks). Click “Get live rates” to refresh within the day. The static fallback is the latest ECB reference rates.

Banks and money transfer services add a spread (their profit) to the mid‑market rate. They also may charge a fixed fee. Our rate is the raw interbank rate – the fairest benchmark.

This tool focuses on fiat currencies. For crypto, you need a crypto exchange’s order book. But you can use BTC/USD rate as a starting point if you manually enter BTC as “USD” equivalent? Not recommended due to volatility.

We use USD as the base for the reference table. Internally we convert via USD to any pair, which yields the same cross rate as direct if the market is consistent.

Not yet. For historical analysis, see our Currency Historical Lookup (separate tool).

Explore the BIS Triennial Survey, the ECB reference rates, or investopedia’s forex section.
References: ECB reference rates · BIS Triennial Survey · IMF Working Paper WP/24/89 “Exchange Rate Pass‑Through”. Data API: exchangerate.host